Head position control method, disk device, and servo track...

Details Head position control method, disk device, and servo track... Head position control method, disk device, and servo track...

2006-01-24

2006-01-24

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S075000

Reexamination Certificate

active

06989956

ABSTRACT:
A head position control method performs virtual circular control which does not follow the eccentricity of a disk, and implements high precision virtual circular control, even if the servo signals of an area demodulation method are used. The method performs virtual circular control by demodulating position signals in the area demodulation method and calculates the demodulation position with the velocity offset correction of 2-phase servo signals by using both the head velocity V of the virtual circular orbit reference and the relative velocity ΔV of the virtual circular orbit and the position signal.

REFERENCES:
patent: 3725764 (1973-04-01), Oswald
patent: 5880901 (1999-03-01), Smith et al.
patent: 6137753 (2000-10-01), Grimsley
patent: 6545838 (2003-04-01), Burton
patent: 6728061 (2004-04-01), Takaishi
patent: 2003/0063404 (2003-04-01), Takaishi et al.
patent: 08-195044 (1996-07-01), None
patent: 09-128915 (1997-05-01), None
patent: 09-330571 (1997-12-01), None
patent: 10-172254 (1998-06-01), None
patent: 2001-256741 (2001-09-01), None
“Disk Runout Accomodation,” Dec. 1978, IBM TDB vol. 21, No. 7, pp. 2688-2691.
“Reducing RRO by Hybrid-type STW for Hard Disk Drives,” Meeting Report of IIP2000, No. 00-10, The Japanese Society of Mechanical Engineers, no translation.

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